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ianthineviolet-colourediarovizeAlternative form of jarovize.ibogaine(biochemistry) A naturally-occurring psychoactive compound found in a number of plants, principally iboga (Tabernanthe iboga), and used for medicinal and ritual purposes in African spiritual traditions of the Bwiti. Its use in opioid addiction treatment seems promising but has safety issues.iccosome(immunology) An immunocomplex bodyicecreteA concretion of water ice as the cementing substance, and an aggregate.icedrake(fantasy) A dragon which breathes ice or has a freezing body temperature.icehouseA deep cellar or outdoor building used for the storage of ice or snow; sometimes also used to store food at low temperature.icequakeThe concussion that occurs when large masses of ice break up due to contraction.icescapeAn ice-covered landscape.iceskateAlternative form of ice skate.ichomage(sumo) Alternative spelling of oichomage.ichthineAn albuminous substance found in fish eggs.iconlikeResembling an icon (religious emblem).icterodeDated form of icteroid.idealiseNon-Oxford British English standard spelling of idealize.idealize(transitive) To regard something as ideal.ideativeRelating to ideation.ideotypeA specimen identified as belonging to a specific taxon by the author of that taxon, but collected from somewhere other than the type localityidiosome(biology, dated) The attraction-sphere of a spermatid or of an oocyte.idiotese(slang, rare) A form of language simplified to the point where even an idiot can understand it.idiotizeTo make, become, or deem idiotic or stupid.idiotopeThe unique set of antigenic determinants (epitopes) of the variable portion of an antibody.idiotype(immunology) A characteristic shared by a group of immunoglobulin or T-cell receptor molecules, based on the antigen-binding specificity of their variable region; and thus, the resultant immunologic phenotype, which can often be specific to a person or to only a small percentage of people.idlesomeCharacterised or marked by idlenessidocaineMisspelling of lidocaine.idocrase(geology) vesuvianiteigdloite(mineralogy) Synonym of lueshite.igmesineA sigma receptor agonist with neuroprotective, antidepressant, and nootropic effects.ignifugefire retardantignitiveThat ignites or relates to ignition.ignorize(nonce word) To promote ignorance; to withhold from education.ignorome(genetics) Sets of genes and corresponding RNAs or proteins whose functions are, as yet, unknown.iguanineAny lizard of the genus Iguana.ijussite(mineralogy) A kind of mafic teschenite mineral.ikranite(mineralogy) A trigonal-ditrigonal pyramidal brownish yellow mineral containing calcium, cerium, chlorine, fluorine, hafnium, hydrogen, iron, lanthanum, manganese, neodymium, niobium, oxygen, potassium, silicon, sodium, strontium, titanium, and zirconium.illativeOf, or relating to an illation.illeagleMisspelling of illegal.illipene(organic chemistry) A substance found in illipe butter.illocute(philosophy, pragmatics, intransitive or transitive with the speech act as object) To perform an illocutionary act.illudaneA toxic spirocyclic sesquiterpenoids produced by various bracken ferns and by fungi of the phylum Basidiomycota.illumineSynonym of illuminate.illusiveSubject to or pertaining to an illusion, often used in the sense of an unrealistic expectation or an unreachable goal or outcome.illustreTo illuminate (something).ilmenite(mineralogy) A weakly magnetic dark gray mineral found in metamorphic and igneous rocks; it is a mixed oxide of iron and titanium, FeTiO₃iltisite(mineralogy) A hexagonal-trapezohedral mineral containing bromine, chlorine, mercury, silver, and sulfur.imaamateAlternative form of imamate.imagableAlternative form of imageable.imbecile(derogatory) A fool, an idiot.imbezzleObsolete form of embezzle.imgreite(mineralogy) A hexagonal-dihexagonal dipyramidal pale rose red mineral containing nickel and tellurium.imhofite(mineralogy) A monoclinic-prismatic copper red mineral containing arsenic, copper, sulfur, and thallium.imitableCapable of being imitated or copied.imitateeOne that is imitatedimmanateTo flow inward.immantle(poetic or archaic) To cover; to mantle.immature(now rare) Occurring before the proper time; untimely, premature (especially of death).immingle(archaic, poetic) To mingle; to mix; to unite; to blend.immobileFixed, not movable.immolateTo kill as a sacrifice by burning.immotileNot motile (lacking the ability to move)immunise(British spelling) Alternative spelling of immunize.immunize(transitive) To make someone or something immune to something.immunome(immunology) All the genes and proteins associated with an immune systemimmutate(obsolete, rare) unchangedimpanateEmbodied in bread, especially in the bread of the Eucharist.impearceObsolete spelling of impierce.impedite(obsolete) Hindered; obstructed.impeopleObsolete form of empeople.impierce(obsolete) To pierce; to penetrate.impledge(archaic) To pledge.implunge(transitive, obsolete) To plunge (something into something else).impoliteNot polite; discourteous; not of polished manners; wanting in good manners.importeeSomeone or something that is imported, or brought in from outside.imposure(rare) The act of imposing.impresseObsolete form of impress (“a heraldic device; an impresa”).impropreObsolete form of improper.impurpleAlternative form of empurple.inactiveNot active, temporarily or permanently.inactose(archaic, organic chemistry) An optically inactive variety of sugar, found in certain plants.inaquate(obsolete) Embodied in, or changed into, water.inaurate(obsolete) To cover with gold; to gild.incastle(obsolete) To add castles to a place.incentre(UK) Alternative spelling of incenter.incharge(India) The person who is in charge of something; an employee with responsibility for a department of a company; a manager, supervisor.inchaste(rare) Unchaste.inchoateRecently started but not fully formed yet; just begun; only elementary or immature.incircle(geometry) A circle within a polygon, especially a triangle, that is tangent to each side.incisiveIntelligently analytical and concise. (of a person or mental process)incisure(anatomy) A notch or indent.incitivetending to inciteinconnueAlternative form of inconnu (fish)incorpse(obsolete) To incorporate.increaseto become or make something greater in amount, size, or degreeincreateThat exists without having been created.incubate(transitive) To brood, raise, or maintain eggs, organisms, or living tissue through the provision of ideal environmental conditions.incudate(zoology, anatomy) Of, pertaining to or having an incus (bone of the middle ear).indacene(organic chemistry) Either of two isomeric aromatic hydrocarbons consisting of two cyclopentadiene rings fused to one of benzene - as-indacene and s-indaceneindagate(obsolete, transitive) to search into, investigateindamageAlternative form of endamage.indamine(chemistry) any of a range of organic bases related to phenazine; they form indigo-coloured salts used in making dyesindanone(organic chemistry) Either of two isomeric ketones derived from indane.indazole(organic chemistry) Benzopyrazole.indeedieAlternative spelling of indeedy.indegree(graph theory) The number of edges directed into a vertex in a directed graphindenize(archaic, transitive) To naturalize.indenone(organic chemistry) The bicyclic aromatic ketone formally derived from indene, or by fusion of a benzene ring with cyclopentadienoneinderite(mineralogy) A monoclinic-prismatic mineral containing boron, hydrogen, magnesium, and oxygen.indevote(obsolete) Not devoted.indicate(transitive, sometimes with 'of') To point out; to discover; to direct to a knowledge of; to show; to make known.indicineA particular steroid glycoside.indicteeA person who is indicted.indienne(historical) A type of elaborately patterned textile produced in Europe between the 17th and 19th centuries.indigane(inorganic chemistry) indium hydride, InH₃indigeneAn indigenous person; a native.indigineAlternative form of indigene.indocileUnwilling to be taught or instructed; intractable or recalcitrant.indolate(organic chemistry) Any anion (or salt containing such an anion) derived from an indole by removal of the hydrogen atom bound to the nitrogen atom.indoline(organic chemistry) A bicyclic secondary amine consisting of a benzene ring fused to a pyrrolidine oneindoloneSynonym of oxindole.indomite(obsolete) untamed; savage; wildindorseeArchaic spelling of endorsee.inducive(linguistics) A case indicating the patient who undergoes the tangible effect, impact, or change of state of an act/event initiated/caused by that self-same party. Examples: The boys run in the playground, We talked for hours, The couple eats dinner.inducteeOne who, or that which, is inducted.indulgeeA person who is indulged.induline(organic chemistry) Any of a series of blue, bluish-red and black dyestuffs, formed by the interaction of para-amino azo compounds with primary monoamines in the presence of a small quantity of a mineral acid.indurateTo harden or to grow hard.indutive(botany, archaic) covered; applied to seeds which have the usual integumentary covering.induviae(botany) persistent portions of a calyx or corollainediateNot requiring food (and, in some cases, water) to survive.inediblenot edible; not appropriate, worthy, or safe to eatinescate(obsolete, transitive) To allure; to lay a bait for.inessive(grammar) The inessive case, or a word in that case.infamiseAlternative form of infamize.infamize(transitive) To make infamous; to defame or smear.infecteeA person or other organism that has been infected.infeebleArchaic form of enfeeble.inferiae(historical, Roman antiquity) Sacrifices offered to the souls of deceased heroes or friends.inficete(obsolete, formal) Lacking wit.infinateMisspelling of infinite.infiniteIndefinably large, countlessly great; immense.infolineA helpline providing information.informeeOne who is informed, who receives information.infovoreA person who indulges in and desires information gathering and interpretation.infringe(transitive) To break or violate a treaty, a law, a right, etc.infumate(transitive) To dry by exposing to smoke; to expose to smoke.infusate(medicine) A fluid given intravenously over a period of time for medication or diagnostic purposes.infusiveHaving the power of infusion; inspiring; influencing.ingenane(organic chemistry) A particular bridged bicyclic diterpene that is the basis of many natural productsingendreObsolete form of engender.ingenite(obsolete) Innate, inborn.ingodite(mineralogy) A trigonal-hexagonal scalenohedral silver white mineral containing bismuth, sulfur, and tellurium.ingroove(transitive) To form a groove in.inhabile(obsolete) Not apt or fit; inappropriate; unsuitable.inhaunceObsolete form of enhance.inhearseAlternative form of enhearse.inhumaneAlternative form of inhuman: lacking pity or compassion for misery and suffering; cruel, unkind.inhumate(rare) To inhume; to bury.initiate(transitive) To begin; to start.injecteeA person receiving an injectioninkindleAlternative form of enkindle.inkstoneA stone mortar used for grinding and holding ink in the East Asian art and calligraphy tradition.inleagueAlternative form of enleague.inlumineObsolete form of illumine.inmantle(transitive, rare, archaic) To inwrap in a mantle; enshroud.inmingleAlternative form of enmingle.innative(obsolete) nativeinnelite(mineralogy) A triclinic-pedial mineral containing barium, calcium, fluorine, hydrogen, magnesium, oxygen, potassium, silicon, sodium, sulfur, and titanium.innodate(obsolete, religion) (with anathema or interdict) To bind up, as in a knot, with the punishment of anathema or interdict; to anathemize or interdict.innovate(intransitive) To introduce something new to a particular environment; to do something new.inoculeeOne who is inoculated.inodiate(obsolete, transitive) To make odious or hateful.inotrope(medicine) Any inotropic druginsconceAlternative spelling of ensconce.inscribe(transitive) To write or cut (words) onto (something, especially a hard surface, or a book to be given to another person); to engrave.inserteeOne who is penetrated by another during sexual intercourse.inshrineArchaic form of enshrine.insolate(transitive) To dry in, or expose to, the sun's rays; to ripen or prepare by such exposure.insonate(transitive) To expose to, or treat with, ultrasound.insourceTo obtain goods or services by insourcing.insperse(obsolete, transitive) To sprinkle; to scatter.insphereArchaic form of ensphere.instableExhibiting instability; unstableinstanceAn occasion; an order of occurrence.instaure(obsolete, transitive) To renew or renovate; to instaurate.instrokeAn inward stroke; specifically, in a steam engine or other engine, a stroke in which the piston is moving away from the crankshaft.insudateFluid collection within an arterial wall.insulateTo separate, detach, or isolate.insulite(dated) An insulating material, usually some variety of compressed cellulose, made of sawdust, paper pulp, cotton waste, etc.insulize(rare) Alternative form of insulinize.insulteeOne who is insulted.inswatheArchaic spelling of enswathe.intangleArchaic form of entangle.intasome(biochemistry) A nucleoprotein complex active in integration of DNA from a bacteriophage into a host.interlie(transitive) To lie between.interneeOne who is imprisoned or otherwise confined.intertie(figurative) A bond or support.inthroneArchaic form of enthrone.intimateClosely acquainted; familiar.intitule(transitive, Early Modern, obsolete) To entitle; to give a title to.intonate(transitive, intransitive, dated) To intone or recite (words), especially emphatically or in a chanting manner.intrigueA complicated or clandestine plot or scheme intended to affect some purpose by secret artifice; conspiracy; stratagem.introrse(botany) Facing or turned inwards or towards an axis.intubate(transitive, medicine) To insert a tube into.inundateTo cover with large amounts of water; to flood.inurbaneuncivil; unpolished; rudeinvasiveOf or pertaining to invasion; offensive.invasomeA liposomal vesicle used for drug delivery through the skininveagleObsolete form of inveigle.inveigle(transitive) To convert, convince, or win over with flattery or wiles.investeeThe business entity in which an investment is made.inviableSynonym of nonviable.invirase(medicine) An antiviral drug that prevents the multiplication of HIV cellsinvirileDeficient in manhood; effeminate, unmanly.invocateTo implore or invoke.invoiceeThe person to whom an invoice is made out.involute(formal) Difficult to understand; complicated.iodamide(pharmacology) A particular molecule used as a contrast medium.iodinase(biochemistry) Synonym of thyroperoxidase.iodinate(transitive) To treat, or to combine, with iodine.iodoxole(organic chemistry) The five-membered unsaturated heterocycle consisting of three carbon atoms, one oxygen atom, one hypervalent iodine atom and one double bond; any derivative of this compoundiodozoneAn iodine and ozone compound, historically used as an antiseptic.iodyrite(mineralogy) a natural mineral form of silver iodideionocyte(cytology) A specialized epithelial cell, involved in the maintenance of osmotic homeostasis, that has many ion transportersionoforeMisspelling of ionophore.iopidineApraclonidine.iopodate(pharmacology) A salt or ester of iopodic acid, synonym of sodium iopodate.iopydone(pharmacology) An iodinated contrast dye.ipsative(psychology) Denoting a measure that forces a person to choose among multiple desirable options.ipsatize(transitive) To make ipsative.iptycene(organic chemistry) Any of a group of polycyclic aromatic hydrocarbons composed of arene subunits bound to a bridged bicyclooctatriene coreirarsite(mineralogy) An isometric-diploidal iron black mineral containing arsenic, iridium, platinum, rhodium, ruthenium, and sulfur.irestone(archaic, UK, mining) Any very hard rock.iridesce(intransitive) To be iridescent; to exhibit iridescence.iriscopeA philosophical toy for exhibiting the prismatic tints by means of thin films.irislikeResembling or characteristic of an iris (the plant or its flower).ironableCapable of being ironed.ironlikeResembling iron or some aspect of it.ironmineAlternative spelling of iron mine.ironsideOne who is very strong and courageous.ironwareArticles made of iron, as household utensils, tools, and the like.irrelate(archaic) unrelated; not connectedirrigate(transitive) To supply (farmland) with water, by building ditches, pipes, etc.irritate(transitive) To provoke impatience, anger, or displeasure in.irrorate(transitive, obsolete) To sprinkle or moisten with dew; to bedew.irrugate(obsolete, rare) To wrinkle.irrumate(transitive) To thrust the penis into the mouth; to practice irrumation.isabelleSynonym of isabella.isidiateHaving isidia.isochore(physics) A line drawn on a graph showing the variation of the pressure of a constant volume of gas as it varies with temperature.isocline(geology) A tightly folded syncline or anticline in which the two sides are almost parallel.isocrymeAn isoline connecting points on the Earth's surface having the same mean temperature in the coldest month of the year.isocurve(mathematics) An isoparametric curveisodense(sciences, especially biochemistry) Evenly or uniformly dense; of the same density (as an adjacent object, tissue, etc).isodrome(naval) A method of moving a fleet from one formation to another, the direction usually being changed eight points, by means of paths of equal length for each ship.isohypse(cartography) A contour line; a line on a map connecting points of equal height.isoimide(organic chemistry) An isomer of an imide in which the oxygen and one of the nitrogen atoms are swapped R-N=C(R¹)-O-CO-RisolableAble to be isolated.isolateeOne who is isolated.isoletteAn incubator for a new-born baby.isologue(chemistry) An isologous substance.isophane(of a solution containing protamine and insulin) Being of a certain ratio of protamine to insulin.isopheneA line (on a map, etc.) joining places where a particular biological phenomenon is exhibited in the same way, such as where plants flower at the same time (an isanthesic) or where the same proportion of clines is found.isophoneAn isogloss indicating where a certain phone, or speech segment, is found.isophote(computer graphics) A contour of equal luminance in an image.isoprene(organic chemistry) An unsaturated hydrocarbon, C₅H₈, that is readily polymerized; natural rubber (caoutchouc) is cis-1,4-polyisoprene, and trans-1,4-polyisoprene is present in gutta-percha and balata; it is the structural basis for the terpenes.isoscapeThe geographic distribution of isotope ratios.isospace(physics) A form of spacetime that is rotated about some axisisospore(biology) One of the spores produced by an isosporous organism.isostere(chemistry) Any of a group of molecules or ions that have the same number of valence electrons and have chemical or physical similarities. For example, SH, NH2 and CH3 are isosteres of OH.isothereAn isotherm connecting points on a map with equal mean summer temperature.isouraneSynonym of isoflurane.isovalueHaving the same valueissuable(law) Leading to, producing, or relating to, an issue; capable of being made an issue at law.issuanceThe act of issuing, or giving out.itchlikeLike an itch; similar to a rash or skin irritation that causes itching.itchsomeCharacterised or marked by itchingitemwiseWith regard to itemsiterableCapable of being iterated.iterance(obsolete) iterationitopride(pharmacology) A prokinetic benzamide derivative used to treat gastrointestinal conditions.iwakiite(mineralogy) A tetragonal-ditetragonal dipyramidal greenish black mineral containing iron, manganese, and oxygen.ixiolite(mineralogy) A monoclinic-prismatic mineral containing iron, manganese, niobium, oxygen, tantalum, and tin.iyomanteAlternative form of iomante.